Chamfers and rounds have never been available in Assembly mode. The reason according to PTC is that they have the ability to add material (think of the internal corner chamfer or round) and in an assembly, you can only add "material" by assembling parts (or assemblies).
I guess it's a valid reason but I really don't agree with it.
Create a sketch of your cut with the chamfers and then subtract that in assembly mode.
Adding material in assembly has always not been allowed. IF the software was intuitive enough, it would know the difference between an add material chamfer/round and a subtract and allow the subtract in assemblies.
thats a high horse ptc is sitting on. its sounds as if they intended proe to prevent you from modeling things you cant create in real life. the last time i checked, i could still create features that can never be machined or formed by currently available manufacturing techniques.
creation of rounds is not really adding material when youre making a cutout or adding blind holes at the assembly level (on a weldment for example), and you want to accurately represent the fillet radius at the bottom edges of that cut/hole.
in a past life, i used to curse ptc's name every time i made a counterbored hole in a weldment, because i couldnt add the fillet radius after the hole. as i work-around, i put the hole at the part level, which required the duplication of relevant assembly datums in the part for gd&t control. when features like blind holes and cutouts are machined and controlled at the assembly level, they should be able to be modeled there, fillet radii and all.
its been forever since i had to deal with such things, but im disappointed to hear creo2 still has that limitation.
Laura Woodward Senior Mechanical Engineer Saab Training, LLC Orlando, FL (407) 281-3012
It seems stupid that I can not use a time saving chamfer command instead of rovolve and etrused to create the geomotry that can and is done every day in a simple machine operation of an assembly.
I swear I could do it in WF4 but I have now way of checking now.
No, unfortunately it has never been available. I'm running WF5 currently and the chamfer and round icons are greyed out. I remember that this has been a complaint of mine since pro/e 15/16 way back in 1996.
Anything other than a simple revolve cut or straight extrude can become a nightmare sweep that will cause problems from the day it is created until the day the part dies. At least that is my opinion.
Our method here at NOV is to use a merge technique when we are going to do "complicated" machining on an assembly (usually a welded assembly) to make the assembly into a part. It is prone to certain problems also but when you need to machine a large welded assembly, it's what I would consider the lesser of the evils.
In short the features need to be machined when the upper and lower components are mating to create a continuous surface regardless ofmanufacturing mismatch.
The feature cannot go in the part file because the forging and machining are done at manufacturer A.
Then it is shipped to a second manufacturer B who heat treats and additional operations after the part is assembled.
Manufacture A and B each have individual drawings.
For more complicated rounds do like this: - create surface at assembly level, with copy, for example - create rounds between surfaces - merge if necessary to get closed quilt - create cut using quilt
HTH
Daniel Garcia
Enviado desde mi iPhone
El 06/09/2013, a las 20:05, "Loosli, Ben H" <-> escribió:
> Create a sketch of your cut with the chamfers and then subtract that in assembly mode. > > Adding material in assembly has always not been allowed. IF the software was intuitive enough, it would know the difference between an add material chamfer/round and a subtract and allow the subtract in assemblies. > >
No, you didn't have the ability to do this in WF4. This has always been the way Pro/E has worked. (Well, I can only confirm this is the case for the last 16 years. Our more experienced members would have to comment on older releases.)
